US3166404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of rhodium from fission products
Assignee: Engelhard Industries Inc
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Filing: 1959-03-04
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Granted: 1965-01-19
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Expires: 1979-03-04
Abstract
No abstract record available.
Inventors
- 👤 Eugene A Hausman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:45
CPC Classifications
C; C01; C01G; C01G55/00; C22; C22B; C22B11/00; C22B11/04; C22B11/042; C22B11/06; G; G21; G21F; G21F9/00; G21F9/007; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A PROCESS FOR RECOVERING RHODIUM FROM FISSION PRODUCTS WHICH COMPRISES TREATING AN ACID SOLUTION CONTAINING RHODIUM TO PRECIPITATE INSOLUBLE SULFIDES THEREFROM, CONVERTING REDISSOLVED RHODIUM SULFIDE TO A BASE-SOLUBLE COMPLEX RHODIUM SALT, ADJUSTING THE PH OF THE SOLUTION TO THE BASIC RANGE, REMOVING PRECIPITATED BASE METAL COMPOUNDS, SEPARATING RHODIUM FROM THE SOLUTION, AND RECOVERING RHODIUM METAL.
Claim 2
Dependent Claim
55 words
A PROCESS FOR RECOVERING RHODIUM FROM FISSION PRODUCTS WHICH COMPRISES TREATING AN ACID SOLUTION CONTAINING RHODIUM TO PRECIPITATE INSOLUBLE SULFIDES THEREFROM, CONVERTING REDISSOLVED RHODIUM SULFIDE TO A BASE-SOLUBLE COMPLEX RHODIUM SALT, ADJUSTING THE PH OF THE SOLUTION TO THE BASIC RANGE, REMOVING PRECIPITATED BASE METAL COMPOUNDS, SEPARATING RHODIUM FROM THE SOLUTION, AND RECOVERING RHODIUM METAL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-19 | 1968-07-20 | 1969-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-19 | 1972-07-20 | 1973-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-19 | 1976-07-20 | 1977-01-19 | $7700.00 | Window Closed / Lapsed |